Heating element for incubators.



J. L. SHUTB. HEATING ELEMENT FOR INCUBATORS. 'APPLIOA'I'IOH FILED 001'. 17. 1912.

Patented Oct. 20, 1914.

2 SHEETSSHEET 1.

an no ntoz ifovmz i h Q1 J. L. SHUTE. HEATING ELEMENT FOR INCUBA'IORS. APPLICATION nun 001311. 1912.

Patented Oct. 20, 1914.

2 SHEETQ*SHBBT 2.

auvewto'o ovmeiifimmw 3517 M,

albmwwap JAMES LOVELL SHUTE, OF SEATTLE, WASHINGTON.

HEATING ELEMENT FOR INCUBATORS.

Specification of Letters Patent.

Patented Oct. 20, 1914.

application filed October 17, 1912. Serial No. 726,322.

TO-(Zll izgliom it may concern Be it known that I; JAMES L. SHUTE, a

citizen of the United States, residing at Seattle, inthe county of King and State of livashington, have invented certain new and useful Improvements in Heating Elements for Incubators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to heating elements for incubators and the like and has for an object to provide improved means for heating and circulating a heating fluid.

A further object of the invention is to provide improved means for controlling the application of the heat to the fluid containing housing.

A further object of the invention is to provide improved means for regulating the flame of the heating device.

A further object of the invention is to provide improved means for controlling the :irculation of the heating fluid.

With these and other objects in view the invention comprises certain novel constructions, combinations and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawings: Figure 1 is a view of the heating device in vertical diametrical section. Fig. 2 is a top plan view of the heating device showing line 2-2 as the plane of Fig. 1. Fig. 3 is a perspective view of the heat controlling mechanism removed from the housing.

Like characters of reference designate cor responding parts throughout the several views.

The improved heating device which forms the subject matter of this application is adapted for use in association with circulating heating systems wherein a. fluid, as for instance water, is used as a heated circulating medium. The device comprises a housing 10 having a conical heat flue 11 which together with the diaphragm 12 forms a fluid compartment or water jacket 13. At one side the fluid compartment extends downwardly as indicated at 14 to form communication with the return pipe 15, the outflow pipe 16 communicating with the compartment adjacent the top.

The heating device illustrated is intended to be operated in conjunction with any ordinary expansible member forming a therniostat to which is connected an arm 17 terminating over the heating element. Between the outflow pipe 16 and the compartment 13 a partition 18 is erected having an opening 19 formed therethrough and a slide valve 20 provided with a registering opening 21 and mounted to slide adjacent such partition controlled through the medium of a connecting member with the arm 17 so that as the arm 17 rises and lowers under the action of the expansiole member the slide valve 20 is raised and lowered to vary the registering opening through the partition and valve.

\Vithin the conical heat flue 11 an escape flue 23 is erected immediately above the burner 21 and is provided with a valve adapted to close the upper end of such escape flue. The valve 25 is connected by means of an eye-bolt 2G and a link 27 with the arm 17 so that as the arm 17 rises and lowers as above mentioned the valve 25 is opened and closed. It will lie-apparent that when the valve 25 is open the heat from the burner 21 will have a tendency to pass di rectly upwardly throughthe escape flue and outwardly to the atmosphere. the valve is closed the heat from the burner 2% cannot pass through such escape flue and is forced to pass about the exterior of such flue. About the exterior of the flue conical bafile plates 28 are erected so that the heat from the burner instead of passing upwardly about the exterior of the escape line 23 is thrown outwardly into engagement with the interior of the heating flue 11 and into contact with the surface of such flue and in position to expend its heat upon the contained fluid. At the top the fine is provided with openings 29 which permit the vitiated gases to pass outwardly to the atmosphere. At the same time that the heat from the burner is permitted to escape to the atmosphere and the flow of fluid interrupted it is alsodesirable to reduce the heat generated. For such purpose the burner tube 30 is surrounded by a sleeve 31 vertically slidable. It will be understood that when the sleeve 31 is moved upwardly above the top of the burner tube the flame upon the wick will be reduced. To raise and lower such sleeve an arm 32 extends outwardly through the side of the housing 10 and is rigidly connected with a rod which extends upwardly along such housing.

Across the top of the housing a rock shaft 34 is journaled having a lever arm 35 con nectcd by means of links 36 with the ex tremity of the arm 17. Upon the end of the rock shaft without the lines of the housing another lever arm 37 is provided to which the upper end of the rod 33 is adjustably connected, such adjustment being provided by the holes as indicated at Fig. lat varying distances fromthe rock shaft 34. It will be apparent therefore that when the arm 17 lifts under the action of the expansible member itwill simultaneously reduce the flow of the heating fluid, open the valve to permit the escape of the products of combustion from the burner andwill reduce the flame at such burner. To permit the movement of t the sleeve 31' without binding and to permit the adjustment of the rod 33 upon the lever arm 37 the sleeve is made conical as shown which will permit a free movement of the sleeve without binding.

The burner 29 is adapted to engage with a conical flue 38 and to provide for the proper separating of such burner relative to the flue the heater reservoir 39 is supported upon a rod 40 which is controlled by a crank-arm 41 upon the exterior of the housing so that by moving such crank-arm 41 the-reservoir 39 and the burner 24 may be lowered to remove from engagement with the flue 38.

I claim: i i

1. In a heating device, a conical heating flue, an escape flue mounted within the conical flue, a valve closing the upper end of the escape flue, a burner mounted beneath the lower end of'the escape flue, a housing embracing the burner and conical flue and producing a water jacket, a sleeve embracing the burner and-vertically slidable relative thereto, a rock shaft journaled upon the top of the conical flue and extending beyond the lines of the housing, a rod connecting the rock shaft and sleeve, outflow and return pipes connected with the water jacket, a par 45 tition formed in the water jacket adjacent the outflow pipe and provided with an opening, a valve provided with a {registering opening mounted to slide relative to the partit on and means to simultaneously actuate the slide valve, the rockshaft and the flue closing valve.

2. A heatin device, comprising a central escape flue, a heating flue and an outer water jacket, said heating flue being substan- 5.5

tially conical in form and inclosing said escape flue substantially c lindrical in form, a burner located beneath said escape flue;- a damper located in the top of said escape flue, an outflow valve controlling the outflow 6.0

from said water jacket, and means for simultaneously operating said damper and outflow valve.

A heating device comprising a central escape flue, a heating flue, and an outer water jacket, said heating flue being substantially conical in form and inclosing said escape flue substantially cylindrical in form, a

burner located beneath said escape flue, a:. damper located vin the topof said escape J AME S LOVELL SHUTE;

Witnesses:

W ILLIAM BonTnwIoK, H. D. Bv'r'rnnwon'rn. 

